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authorBjarke Istrup Pedersen <gurligebis@gentoo.org>2010-05-24 12:15:56 -0700
committerRichard Purdie <rpurdie@linux.intel.com>2010-05-26 13:07:54 +0100
commit14e40f644b020d473415342461b7c62e3bb5e312 (patch)
treed1d0d2e92908f02651f632a84ac2cc80a8f31be1
parent98652efceab8f0b1a3a1b2750544a395ec056115 (diff)
leds: Add LED driver for the Soekris net5501 board
It is based on the previously submitted code by Alessandro Zummo, but is changed to use the new GPIO driver with 2.6.33, and the driver has been moved to drivers/leds where it belongs. [akpm@linux-foundation.org: coding-style fixes] [randy.dunlap@oracle.com: fix net5501 kconfig] Signed-off-by: Bjarke Istrup Pedersen <gurligebis@gentoo.org> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
-rw-r--r--drivers/leds/Kconfig10
-rw-r--r--drivers/leds/Makefile1
-rw-r--r--drivers/leds/leds-net5501.c94
3 files changed, 105 insertions, 0 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 505eb64c329..ecb6932c363 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -67,6 +67,16 @@ config LEDS_NET48XX
This option enables support for the Soekris net4801 and net4826 error
LED.
+config LEDS_NET5501
+ tristate "LED Support for Soekris net5501 series Error LED"
+ depends on LEDS_CLASS && LEDS_TRIGGERS
+ depends on LEDS_GPIO_PLATFORM && GPIO_CS5535
+ select LEDS_TRIGGER_DEFAULT_ON
+ default n
+ help
+ Add support for the Soekris net5501 board (detection, error led
+ and GPIO).
+
config LEDS_FSG
tristate "LED Support for the Freecom FSG-3"
depends on MACH_FSG
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index 0cd8b995738..77119f2e26b 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_LEDS_MIKROTIK_RB532) += leds-rb532.o
obj-$(CONFIG_LEDS_S3C24XX) += leds-s3c24xx.o
obj-$(CONFIG_LEDS_AMS_DELTA) += leds-ams-delta.o
obj-$(CONFIG_LEDS_NET48XX) += leds-net48xx.o
+obj-$(CONFIG_LEDS_NET5501) += leds-net5501.o
obj-$(CONFIG_LEDS_WRAP) += leds-wrap.o
obj-$(CONFIG_LEDS_ALIX2) += leds-alix2.o
obj-$(CONFIG_LEDS_H1940) += leds-h1940.o
diff --git a/drivers/leds/leds-net5501.c b/drivers/leds/leds-net5501.c
new file mode 100644
index 00000000000..3063f591f0d
--- /dev/null
+++ b/drivers/leds/leds-net5501.c
@@ -0,0 +1,94 @@
+/*
+ * Soekris board support code
+ *
+ * Copyright (C) 2008-2009 Tower Technologies
+ * Written by Alessandro Zummo <a.zummo@towertech.it>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/string.h>
+#include <linux/leds.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+
+#include <asm/geode.h>
+
+static struct gpio_led net5501_leds[] = {
+ {
+ .name = "error",
+ .gpio = 6,
+ .default_trigger = "default-on",
+ },
+};
+
+static struct gpio_led_platform_data net5501_leds_data = {
+ .num_leds = ARRAY_SIZE(net5501_leds),
+ .leds = net5501_leds,
+};
+
+static struct platform_device net5501_leds_dev = {
+ .name = "leds-gpio",
+ .id = -1,
+ .dev.platform_data = &net5501_leds_data,
+};
+
+static void __init init_net5501(void)
+{
+ platform_device_register(&net5501_leds_dev);
+}
+
+struct soekris_board {
+ u16 offset;
+ char *sig;
+ u8 len;
+ void (*init)(void);
+};
+
+static struct soekris_board __initdata boards[] = {
+ { 0xb7b, "net5501", 7, init_net5501 }, /* net5501 v1.33/1.33c */
+ { 0xb1f, "net5501", 7, init_net5501 }, /* net5501 v1.32i */
+};
+
+static int __init soekris_init(void)
+{
+ int i;
+ unsigned char *rombase, *bios;
+
+ if (!is_geode())
+ return 0;
+
+ rombase = ioremap(0xffff0000, 0xffff);
+ if (!rombase) {
+ printk(KERN_INFO "Soekris net5501 LED driver failed to get rombase");
+ return 0;
+ }
+
+ bios = rombase + 0x20; /* null terminated */
+
+ if (strncmp(bios, "comBIOS", 7))
+ goto unmap;
+
+ for (i = 0; i < ARRAY_SIZE(boards); i++) {
+ unsigned char *model = rombase + boards[i].offset;
+
+ if (strncmp(model, boards[i].sig, boards[i].len) == 0) {
+ printk(KERN_INFO "Soekris %s: %s\n", model, bios);
+
+ if (boards[i].init)
+ boards[i].init();
+ break;
+ }
+ }
+
+unmap:
+ iounmap(rombase);
+ return 0;
+}
+
+arch_initcall(soekris_init);